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National Regulation Authorities
- Europe
- Independent Regulator's Group (IRG)
- Austria
- Telekom Control
- Belgium
- BIPT
- Denmark
- Telestyrelsen
- Finland
- TAC
- France
- ART
- Germany
- RegTP
- Greece
- National Telecommunication and Post Commission
- Hong Kong
- OFTA
- Iceland
- PTA
- Ireland
- Office of the director of Telecommunications Regulations
- Italy
- Autorità per le Garanzie nelle Comunicazioni
- Luxembourg
- ILT
- Netherlands
- OPTA
- New Zealand
- Ministry of Economic Development
- Norway
- Norwegian Post and Telecommunications Authority
- Portugal
- ANACOM
- Singapore
- IDA
- Spain
- CMT
- Sweden
- PTS
- Switzerland
- BAKOM
- United Kingdom
- OFTEL
- United Kingdom
- Radiocommunications Authority
- United States
- FCC